making 904L steel than 316L in the corrosion resistance and wear resistance is stronger. At the uk replica watches same time 904L steel containing molybdenum, nickel, copper than the rolex replica watches 316L steel is higher, and the proportion of these three metals and iron than large. So on the swiss replica watches weight of the same volume of 904L steel than the 316L steel sink a lot, more heavy sense, but also confirms the Rolex brand temperament - practical and stable.